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Optical Beam Propagation In Turbulent Media
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Book Synopsis Optical Beam Propagation in Turbulent Media by : Ronald Louis Fante
Download or read book Optical Beam Propagation in Turbulent Media written by Ronald Louis Fante and published by . This book was released on 1975 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most recent developments on the propagation of microwave and optical beams in turbulent media, such as the clear atmosphere are discussed. Among the phenomena considered are beam spreading, beam wander, loss of coherence, scintillations, angle-of-arrival variations, and short pulse effects. Also included is a discussion of methods of compensation of the effect of turbulence on communications and imaging systems.
Author :Larry C. Andrews Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :820 pages Book Rating :4.3/5 (91 download)
Book Synopsis Laser Beam Propagation Through Random Media by : Larry C. Andrews
Download or read book Laser Beam Propagation Through Random Media written by Larry C. Andrews and published by SPIE-International Society for Optical Engineering. This book was released on 2005 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since publication of the first edition of this text in 1998, there have been several new, important developments in the theory of beam wave propagation through a random medium, which have been incorporated into this second edition. Also new to this edition are models for the scintillation index under moderate-to-strong irradiance fluctuations; models for aperture averaging based on ABCD ray matrices; beam wander and its effects on scintillation; theory of partial coherence of the source; models of rough targets for ladar applications; phase fluctuations; analysis of other beam shapes; plus expanded analysis of free-space optical communication systems and imaging systems.
Book Synopsis Laser Beam Propagation in the Atmosphere by : J. W. Strohbehn
Download or read book Laser Beam Propagation in the Atmosphere written by J. W. Strohbehn and published by Springer. This book was released on 2014-03-12 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions by numerous experts
Book Synopsis Propagation in Turbulent Media by : Ronald Louis Fante
Download or read book Propagation in Turbulent Media written by Ronald Louis Fante and published by . This book was released on 1975 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report the author has reviewed the recent developments on beam propagation in a turbulent medium. These include the effect of the turbulence on beam intensity, spread, coherence, wander, angle of arrival, scintillation and distortion, as well as other related topics.
Book Synopsis Experimental Investigations of Optical Propagation in Atmospheric Turbulence by : Michael W. Fitzmaurice
Download or read book Experimental Investigations of Optical Propagation in Atmospheric Turbulence written by Michael W. Fitzmaurice and published by . This book was released on 1971 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pertinent theoretical background and the results of a group of experiments conducted over 0.4- and 1.17-km near-ground horizontal ranges are presented. (1) The log-amplitude variances for HeNe (0.633 μm) and CO2 (10.6 μm) laser beams were found to have a ratio of 26.8, which is in close agreement with the predictions of Rytov-based spherical-wave theory. (2) Published measurements of the saturation level of the log-amplitude variance are reviewed and several inconsistencies noted. (3) The spatial correlation function of irradiance field was measured and found to agree with theory. The degree of correlation between different frequency beams which had traversed the same optical path was also measured and compared to theory. The data exhibited an unacceptably large scatter and did not show the wavelength dependence. (4) The log-normal, Rayleigh, and Rice probability distributions are discussed in terms of their applicability to irradiance statistics. Relatively weak 10.6 μm irradiance fluctuations were found to be equally well described by the log-normal and Rice distributions; strong fluctuations obtained at 0.488 μm were clearly best described by the log-normal distribution.
Book Synopsis Orbital Angular Momentum States of Light by : Kedar Khare
Download or read book Orbital Angular Momentum States of Light written by Kedar Khare and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orbital Angular Momentum States of Light provides an in-depth introduction to modelling of long-range propagation of orbital angular momentum (OAM) modes as well as more general structured light beams through atmospheric turbulence. Starting with angular spectrum method for diffraction and description of structured light states, the book discusses the technical details related to wave propagation through atmospheric turbulence. The review of historical as well as more recent ideas in this topical area, along with computer simulation codes, makes this book a useful reference to researchers and optical engineers interested in developing and testing of free-space applications of OAM states of light. Part of IOP Series in Advances in Optics, Photonics and Optoelectronics.
Book Synopsis Numerical Simulation of Optical Wave Propagation with Examples in MATLAB by : Jason Daniel Schmidt
Download or read book Numerical Simulation of Optical Wave Propagation with Examples in MATLAB written by Jason Daniel Schmidt and published by Society of Photo Optical. This book was released on 2010 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerical Simulation of Optical Wave Propagation is solely dedicated to wave-optics simulations. The book discusses digital Fourier transforms (FT), FT-based operations, multiple methods of wave-optics simulations, sampling requirements, and simulations in atmospheric turbulence.
Book Synopsis Optical Waves and Laser Beams in the Irregular Atmosphere by : Nathan Blaunstein
Download or read book Optical Waves and Laser Beams in the Irregular Atmosphere written by Nathan Blaunstein and published by CRC Press. This book was released on 2017-09-22 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book introduces optical wave propagation in the irregular turbulent atmosphere and the relations to laser beam and LIDAR applications for both optical communication and imaging. It examines atmosphere fundamentals, structure, and content. It explains specific situations occurring in the irregular atmosphere and for specific natural phenomena that affect optical ray and laser beam propagation. It emphasizes how to use LIDAR to investigate atmospheric phenomena and predict primary parameters of the irregular turbulent atmosphere and suggests what kinds of optical devices to operate in different atmospheric situations to minimize the deleterious effects of natural atmospheric phenomena.
Book Synopsis Laser Beam Scintillation with Applications by : Larry C. Andrews
Download or read book Laser Beam Scintillation with Applications written by Larry C. Andrews and published by SPIE Press. This book was released on 2001 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewed interest in laser communication systems has sparked development of useful new analytic models. This book discusses optical scintillation and its impact on system performance in free-space optical communication and laser radar applications, with a detailed look at propagation phenomena and the role of scintillation on system behavior. Intended for practicing engineers, scientists, and students.
Book Synopsis Adaptive Beaming and Imaging in the Turbulent Atmosphere by : Vladimir Petrovich Lukin
Download or read book Adaptive Beaming and Imaging in the Turbulent Atmosphere written by Vladimir Petrovich Lukin and published by SPIE Press. This book was released on 2002 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the wide application of adaptive optical systems, an understanding of optical wave propagation in randomly inhomogeneous media has become essential, and several numerical models of individual AOS components and of efficient correction algorithms have been developed. This monograph contains detailed descriptions of the mathematical experiments that were designed and carried out during more than a decade's worth of research.
Book Synopsis Mutual Coherence Function of a Beam Propagating in a Turbulent Medium by : Ronald Louis Fante
Download or read book Mutual Coherence Function of a Beam Propagating in a Turbulent Medium written by Ronald Louis Fante and published by . This book was released on 1973 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using transport theory the mutual coherence function of a beam propagating in a turbulent medium has been studied in detail, including the effect of the beam size, focal length and strength of the turbulence. The most detailed results are obtained for the MCF when the fluctuations have a Gaussian spectrum, but simple closed-form asymptotic results have also been obtained when the spectrum is a von Karman. (Author).
Book Synopsis Turbulence and Related Phenomena by : Regis Barille
Download or read book Turbulence and Related Phenomena written by Regis Barille and published by BoD – Books on Demand. This book was released on 2019-04-17 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents some of the most important results concerning atmospheric turbulence and some of its effects on the propagation of a light beam. Atmospheric turbulence causes fluctuations in both the intensity and the phase of the beam and still must be understood and modelized for applications in photonics or environmental metrology. The future of free-space optical (FSO) communication through atmospheric turbulence channels is especially of interest and research on high bit-rate communications attracts more and more interest as an alternative to radio links because of bandwidth, spectrum, and security issues. Some of the current solutions for improving FSO communications are presented in this book.
Book Synopsis Mutual Coherence Function and Frequency Spectrum of a Laser Beam Propagating Through Atmospheric Turbulence by : Ronald Louis Fante
Download or read book Mutual Coherence Function and Frequency Spectrum of a Laser Beam Propagating Through Atmospheric Turbulence written by Ronald Louis Fante and published by . This book was released on 1974 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mutual coherence function of a laser beam propagating in turbulence with a modified von Karman spectrum for the index of refraction fluctuations, including a parametric study of the effect on the MCF of varying beam size, focal length, and the properties of the turbulence was computed. The results are valid over all propagation distances, unlike calculations employing the method of smooth perturbations. Also studied was the effect of a constant wind on the frequency spectrum of signal. It was found that over most practical path lengths the spectral width is delta omega = 4.1V ((k sub o)sup 6/5)(z sup 3/5)((C sub n, sub 2)sup 3/5), where V is the wind speed, k sub o is the signal wavenumber, C sub n sup 2 is the strength of turbulence, and z is the path length in the turbulence. (Modified author abstract).
Book Synopsis Encyclopedia of Optical Engineering: Pho-Z, pages 2049-3050 by : Ronald G. Driggers
Download or read book Encyclopedia of Optical Engineering: Pho-Z, pages 2049-3050 written by Ronald G. Driggers and published by CRC Press. This book was released on 2003 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Compiled by 330 of the most widely respected names in the electro-optical sciences, the Encyclopedia is destined to serve as the premiere guide in the field with nearly 2000 figures, 560 photographs, 260 tables, and 3800 equations. From astronomy to x-ray optics, this reference contains more than 230 vivid entries examining the most intriguing technological advances and perspectives from distinguished professionals around the globe. The contributors have selected topics of utmost importance in areas including digital image enhancement, biological modeling, biomedical spectroscopy, and ocean optics, providing thorough coverage of recent applications in this continually expanding field.
Book Synopsis Beam Propagation Method for Design of Optical Waveguide Devices by : Ginés Lifante Pedrola
Download or read book Beam Propagation Method for Design of Optical Waveguide Devices written by Ginés Lifante Pedrola and published by John Wiley & Sons. This book was released on 2015-10-13 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The basic of the BPM technique in the frequency domain relies on treating the slowly varying envelope of the monochromatic electromagnetic field under paraxial propagation, thus allowing efficient numerical computation in terms of speed and allocated memory. In addition, the BPM based on finite differences is an easy way to implement robust and efficient computer codes. This book presents several approaches for treating the light: wide-angle, scalar approach, semivectorial treatment, and full vectorial treatment of the electromagnetic fields. Also, special topics in BPM cover the simulation of light propagation in anisotropic media, non-linear materials, electro-optic materials, and media with gain/losses, and describe how BPM can deal with strong index discontinuities or waveguide gratings, by introducing the bidirectional-BPM. BPM in the time domain is also described, and the book includes the powerful technique of finite difference time domain method, which fills the gap when the standard BPM is no longer applicable. Once the description of these numerical techniques have been detailed, the last chapter includes examples of passive, active and functional integrated photonic devices, such as waveguide reflectors, demultiplexers, polarization converters, electro-optic modulators, lasers or frequency converters. The book will help readers to understand several BPM approaches, to build their own codes, or to properly use the existing commercial software based on these numerical techniques.
Book Synopsis Frequency Spectrum of Optical Waves Propagating in a Moving Turbulent Atmosphere by : Ronald Louis Fante
Download or read book Frequency Spectrum of Optical Waves Propagating in a Moving Turbulent Atmosphere written by Ronald Louis Fante and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have calculated the frequency spectrum of plane waves and beams propagating in a moving turbulent atmosphere. Both the case when the atmosphere moves with a constant wind and the case when the wind velocity is distributed according to a gaussian centered about some average velocity is considered. The results indicate that for small propagation distances, the frequency spectrum behaves as omega sup -8/3 for large frequency, omega; for large propagation distances, the spectrum is broadened with increasing distance-with the broadening dependent upon the beam parameters and the wind velocity. (Author).
Download or read book NASA Technical Paper written by and published by . This book was released on 1978 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
